package com.sky.service.impl;


import ch.qos.logback.core.joran.util.beans.BeanUtil;
import com.sky.context.BaseContext;
import com.sky.dto.ShoppingCartDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.ShoppingCart;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.mapper.ShoppingCartMapper;
import com.sky.service.ShoppingCartService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class ShoppingCartServiceImpl implements ShoppingCartService {

    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private SetmealMapper setmealMapper;

    /**
     * 添加购物车
     * @param shoppingCartDTO
     * @return
     */
    public void addShoppingCart(ShoppingCartDTO shoppingCartDTO){
        ShoppingCart shoppingCart = new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO,shoppingCart);

        shoppingCart.setUserId(BaseContext.getCurrentId());

        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if(shoppingCartList != null && shoppingCartList.size() == 1){
        //如果已经存在就更新数量
        shoppingCart = shoppingCartList.get(0);
        shoppingCart.setNumber(shoppingCart.getNumber() + 1);
        shoppingCartMapper.updatNumberById(shoppingCart);
        }else {
            //r如果不存在插入数据1
            Long dishId = shoppingCartDTO.getDishId();
            if (dishId != null){
                //添加到购物车的是菜品
                Dish dish = dishMapper.getById(dishId);
                shoppingCart.setName(dish.getName());
                shoppingCart.setImage(dish.getImage());
                shoppingCart.setAmount(dish.getPrice());
            }else {
                //套餐
                Setmeal setmeal = setmealMapper.getById(shoppingCartDTO.getSetmealId());
                shoppingCart.setName(setmeal.getName());
                shoppingCart.setImage(setmeal.getImage());
                shoppingCart.setAmount(setmeal.getPrice());
            }
            shoppingCart.setNumber(1);
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCartMapper.insert(shoppingCart);
        }
    }
    /**
     * 购物车查询
     *
     * @param
     * @return
     */
    public List<ShoppingCart> showShoppingCart(){
        return shoppingCartMapper.list(ShoppingCart
                .builder()
                .userId(BaseContext.getCurrentId())
                .build());
    }
    /**
     * 清空购物车
     * @return
     */
    public void cleanShoppingCart(){
        shoppingCartMapper.deleteByUserId(BaseContext.getCurrentId());
    }

}
